president obama and house speaker john boehner spoke by phone on tuesday, exchanging new proposals. the president gave boehner a revised offer on monday, reducing his demand for new tax revenue from $1.6 trillion to $1.4 trillion over ten years. boehner responded with a plan that largely sticks to his original offer a week ago. reports say the white house has told republicans it would include an overhaul of corporate taxes in any budget deal. that hasn't been done before. in an exclusive interview with barbara walters of abc news, president obama says he still expects a deal before the end of the year. >> i remain optimistic that there are enough people of goodwill in this town that recognize our economy will be much better off. american families will be much better off if we get this done. the most important thing we can do is make sure that middle-class taxes do not go up on january 1. and i'm pretty confident that republicans would not hold middle-class taxes hostage to try to protect tax cuts for high-income individuals. >> prediction -- are you going to be able to raise taxes,